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"0. 0; MAOBRAIR. MACHINE FOR APPLYING WATERPROOFING T0 PAPER.

110. 532,172. Patented Jan.8, 1895'.

UNITED T PATENT OFFICE.

CHARLES C. MAOBRAIR, OF \VESTVVOOD, OHIO.

MACHINE FOR APPLYING WATERPROOFING TO PAPER.

SPECIFICATION forming part of Letters Patent No. 532,172, dated January 8, 1 e95.

Application filed July 2,1894. emi No. 616,298. (No model.)

To all whom it may concern-.-

Be it known that I, CHARLES C. MACBRAIR, a citizen of theUnited States, residing at Westwood, in the county of Hamilton and State of 5 Ohio, have invented certain new and use ful Improvements in Machines for Applying Waterproofing to Paper and other Fabrics, of which the following is a specification.

My invention relates to that class of paper coating-apparatus in which a rotary cylindrical brush is used to apply the coating to the surface of paper and other fabrics, and it con sists in the novel features of arrangement, construction, and operation, hereinafter fully r 5 described, and particularly pointed out in the claims.

In the accompanying drawings, Figure l is a sectional elevation taken on line 00, x, of Fig.

3, showing my device complete in connection with a stack of calender-rolls, the latter being shown simply in diagram without their f samework or mountings; Fig. 2, a broken front elevation of the same, but omitting the stack of calender-rolls; and Fig. 3, a plan of my ma- 2 5 chine, the top guard or fender thereof beingv broken away in several places to show the brush and its bearing at one end, and the calender-rolls being also shown (in dotted lines only, to avoid obscuring the view to any of the parts.)

A represents each of the two side supporting-frames, having a connecting cross-bar or stay B.

(J is a rotary, cylindrical brush, bearing in brackets c secured at the upper fore-ends of frames A, and provided with a driving-pulley 0'.

D is a forwardly-projecting fender or guard,

over the brush 0, its opposite ends being suit- 0 ably secured to the top of frames A.

E represents a down-chute, suitably in ounted between the said two side-frames, and provided with a hopper-shape top e disposed under said brush. 6 is a box or other recep- 4 5 tacle undersaid chute E. t

F represents an upper clamp-bar, and F a lower clamp-bar, between whose inwardlylipped fore edges f and f, respectively, a longitudinal bar or block G composed of paraffine or other similar waterproofing material, in a solid state, is firmly held, a pair or more of screws at having thumb-nuts a being used to unite said clamp-bars over said paraffine bar, as best seen in Figs. 1 and 3.

01, a represent pins projecting from the opposite ends of the lower clamp-bar F into longitudinal slots or ways a made in the sideframes A, said slots being shown in dottedlines in Fig. 3.

b, I), represent rods or bars projecting rearwardly from the said lower clamp-bar F, and taking throughslide-boxes b on said crossstay B. These rods are screw-threaded at their outer ends to accommodate hand-wheels or nuts b suitable cushions or elastic-Washers 19 being first placedon said rods ahead of said hand-wheels, as best seen in Figs. 1 and 3.

13', B, are spiral-springs surrounding the rods 12 between said clamp and cross-stay, and having their expansive-action controlled by said hand-Wheels, which latter are run up and down on said rods to bring the workingface of the paraffine-bar into proper contact with the face of brush 0. l H, h, h, W, and H represent the shown, as it'is deemed unnecessary herein). A continuous strip of paper is shown leading from any source of supply, such as a continutravels down through the stack of calenders as usual, but when it reaches, say, roll it, one face thereof is treated to a coating of paraffine or other suitable waterproofing-material through the instrumentality of the transseveral rolls in a vertical series or stackof ordinary calender-rolls used in connection with a pa per-making machine, (the latter not being nous roll, or the paper-making machine, preferably the latter, and thus in the original verse, rotary cylindrical-brush O, the latter. being charged from a transverse bar or block 7 of paraffine against which it revolves in intimate contact. The bristles in the face of the brush are preferably moderately stiff, in order to properly take only a very small quantity of the paraffine from the face of the solid block or bar G and likewise deposit or apply said small quantity to the surface of the passing paper. By making the bar of paraffine movable toward and from the brush, and having the brush remain at the same distance from the roller, or surface of the paper, the amount of material being applied to the paper can be regulated by simply adjusting the position of the material relatively to the brush. Brush 0 revolves in an opposite direction to that of the advance movement of the paper and at somewhat greater surface velocity, so that the paraffine carried on its face shall be both deposited upon the paper and rubbed into or given the desired surface. The surface or polish of the material upon the paper is also increased by applying pressure to the paper after the application of the wheels on the rods being turned in the desired direction to make due allowance for the width or depth of the paraffine-bar and for its consumption or wearing away in said work. The lateral pins a playing in the slots a properly support the clam p-bars and enable them to be adjusted in either direction forwardly or rearwardly, without hinderance, to suit the condition or size of the paraffine-bar. The elastic- Washers Z2 are provided on the rods b for cushioning the clamps and the paraffine-bar against reaction after any compression of said springs B. Said hand-wheels and the springcontrolled rods facilitate the adjustment of the paraffine-bar, giving it the proper pressure against the brush at all times and presenting it uniformly thereto. It is obvious that, one or more sets of said hand-wheels and spring-rods, and, also, one or more of said clamp-screws,-could be placed intermediate those on the cross-bar or stay and clamp-bars, respectively, where the paper is made in great width, as customary in manufacture.

The device is especially adapted to the waterproofing of straw-paper for wrapping purposes, but it is evident and intended that it may and shall be used in waterproofing Manila and other papers,printed labels, and other fabrics and suitable materials desired to be so surfaced.

It is obvious that the brush may be mounted in ordinary adjustable bearings, to make due allowance for any wear of the bristles. The fender D is provided to prevent upward escape of any fine particles or powder arising from the contact of the brush with the paraffine-bar; and the down-chute E, e, is also provided to convey such powder to the receptacle e below, as best seen in Fig. 1, from whence it may be removed to be remelted and cast into blocks or bars for use again, and thus preventing accumulations under the machine, and especially any waste.

It is also obvious that other materials than parafline may be used in the solid state in my machine, for waxing or waterproofing purposes, and a revolving-brush, having moderately stiff, or even stiff, bristles, employed to remove, carry, and deposit the same in a thin film on the surface of paper or other fabrics.

It is still further obvious that the other surface of the paper could be waterproofed with said thin film of paraffine from a solid bar or block, by means of my brush and accompanying devices duplicated or placed on the fore side of the calender-stack, with said brush in contact with the paper as it passes downward over the roll 72.

I claim- 1. The combination, with a stack of calender rolls, of a rotatory brush adjacent to one of the rolls, other than the last roll, a spring actuated clamp adjacent to the brush, and means for adjusting the distance between the clamp and the brush independently of the distance between the brush and the stack of rolls, substantially as set forth.

2. The combination, with a stack of calender rolls, of a frame adjacent thereto, a brush journaled in the front of the frame, and a crossbar at the rear of the frame provided with slide boxes, a reciprocatory rod through each box, the rear end of which is provided with an adjusting hand wheel, a clamp secured to the front ends of the rods, and a spring upon each rod between the bar and the clamp, substantially as set forth.

3. The combination, with a stack of calender rolls, of a frame adjacent thereto, the sides of the frame being each provided with a slot, a brush journaled in the front of the frame, a cross-bar at the rear of the frame provided with slide boxes, a reciprocatory rod through each box, the rear end of which is provided with means for adjusting the position of the rod in the box, a clamp at the front ends of the rods, a pin in each end of the clamp projecting through the slots of the frame, and a spring upon each rod between the clamp and the cross-bar, substantially as set forth.

4. The combination, with a stack of calender rolls, of a rotatory brush adjacent to one of the rolls, a clamp for holding the material adjacent to the brush, a fender over the brush, and a down chute below the brush, substantially as set forth.

- In testimony of which invention I have here unto set my hand.

CHARLES C. MAGBRAIR.

Witnesses:

JOHN E. J ONES, J. O. RoBIsoN, Jr. 

